Circuit-breaker.



E. W. JOHANSON.

CIRCUIT BREAKER.

APPLICATION FILED AUG.2I,1915.

Patented Oct. 9, 1917.

2 SHEETS-SHEET I.

KHZ

IV I T N E 5555 [NV NTUR. Z W

A TTORNE Y mum 3555 E. W. JOHANSON.

CIRCUIT BREAKER.

APPUCATION FILED Aue.21.1s|6.

1,242,195. Patefited 001s. 9,1917.

2 SHEETSSHEET 2.

Z8 llVVE/VTOR UNITED STATES PATENT OFFICE.

' ERIK WALDElMAR, JOHANSON, OF MOLINE, ILLINOIS.

CIRCUIT-BREAKER.

To all whom it may concern:

Be it known that I, ERIK WV. JoHANsoN, a citizen of Sweden, residing atMoline, in the county of Rock Island and State of Illinois, haveinvented certain new and useful Improvements in Circuit-Breakers, ofwhich the following is a specification.

This invention relates to mechanism for controlling electric lights 'byautomatically opening and closing the lamp circuit, the opening andclosing operations being timed to occur at predetermined times asdesired. With the foregoing and other objects in view the inventionconsistsin the combination and arrangement of parts to be hereinafterfully described in this specification, pointed out in the appended claimand illustrated'in the accompanying drawingswhich r form a part of thespecification and in which- Figure 1 is a front elevation of my improvedmechanism in combination with a lamp circuit which is shown closedthrouglr the instru'mentality of my device.

Fig. 2 is a similar view of my mechanism, but partly in section toaiford a better illustration, in an altered position whereby the lampcircuit is broken.

Like reference characters denote corresponding parts throughout.

The reference numeral 1 denotes a sole noid mounted in a cylindricalcasing 2 which is securely fastened to a wall or other suit-- suitablesupport in which is the -in the top 0 able support in any manner. Thesolenoid is provided with a freely movable core 3 of considerable lengthwhich at its upper end carriesthe pin 1 6f relatively small diameter andwhich projects through a perforation said casing 2.

To the core 3 a pitman 8 is pivotally se-' cured which at its lower .endis connected by pivot 9 to a lever 10 fulcrumed upon a 11, one end ofsaid lever being formed with an elongated slot 12 and the opposite endterminating in a rounded portion 13. A pin 14 is movably disposed in theelongated slot 12 and is connected to the'piston rod 15 which extendsinto the cylinder 16, through a perforation in its lower end, and isprovided with the piston 17 of a diameter substantially the equivalentto the inner diameter of said cylinder v16 within which said piston isadapted for reciprocalmovement. The upper end of the cylinder 16 isprovided with the stem 18 port 19 which is controlled Specification ofLetters Patent.

;in which is formed the port 23.

by the screw valve 20. The lower end of the cylinder 16 is provided withthe intake ball valve 21 and with the check valve 22 Adjacent the lowerend of the core 3 upon a pivot 24 I provide a trigger comprising the arm25 and pin 26 having catch 27 and the contact arm 28 which is curved andterminates at its free extremity in a point. The said trigger isconnected by a contractile spring 29 with a bell-crank-lever 30fulcrumed upon a pin 31 and formed integral with the handle 32. Thelonger arm of the bell-cranlz-lever carries an arm 33 terminating in theconductor 34 adapted for releasable engagement with the contact arms 35.The shorter arm of the bell-crank-lever isformed with a tooth 36 forengagement 1 with the said catch 27. One of the contact runs 35 isconnected by wire 37 with the solenoid 1, said wire 37 beingeonnectedbv' another wire 38 with a series of lamps 39 which lamp seriesis connected to the switch .0 which is connected by wire 41 with theother contact arm The said switch 40 is connected by wire 42 with themain circuit #13 which is also connected to the lamp series and pushbuttons 43 connected to the lamp series are also connected to. the wire4A which runs tethe solenoid 1.

The operation of the device is as follows: In Fig. 2 the lights areshown off because the circuit is broken. To light the lights theoperator manually moves the handle 32 upward thus, through themedium ofthe bell-crank-lever 30, depressing the conductor and causing it toconnect the contact arms 35 and close the circuit. This operation also,

places the tooth 36 into engagement with the catch 27 which prevents thereturn of the bell-erank-lever to initial position which wouldotherwise. result from the retractile action of the spring 29. Thisoperation, further, energizes the'solenoid which gradually raises thecore 3 and, through the medium of pitman 8 and lG\61 10 lowers thepiston 17 thus drawing air into the cylinder 16 through the port'19 andforces air from that cylinder, below the said piston, through the checkvalve 22 with its port 23. The resistance of the air in the cylinder 16retards the upwardmovement of the core 3.

-Ifig. 1 shows the device just previous to its operation upon thetrigger. .A slight fgrther upward movement of the core 3 will PatentedOct. 9, 191'7. I Application filed August 21, 1916. Serial N 0. 116,067.a I

actuate the trigger through its engagement with the arm 28 thus raisingthe pin 26 and catch 27 and permitting the spring 23) to raise thebell-crank-lever 30 and so move the conductor 34 out'of engagement withthe contact arms 35. The solenoid now becomes dcnergized and the weightof the core will cause the same to move downward again, this movementbeing hampered however by the air above the piston 1'7 in the cylinder16 which must be slowly forced out through the valve port 19. The lengthof time required for the core 3 to move through gravity to its lowestposition depends upon the rapidity with which the air can be expelledfrom the cylinder 16 througlrthe said port 19 which may be partially orentirely closed by means of the screw valve 20.

What is claimed is I In an adjustable circuit breaker including a pairof contact arms, a conductor adapted For releasable engagement with saidcontact arms, a trigger, a, bell-crank-lever connecting said lever andconductor and adjustable with relation to the former member, arelractilc spring connecting said trigger and bellcranli-lever, asolenoid having a freely movable core, a pitnian carried by said core, alever pivotally connected to said pitlnan and adapted for engagementwith said trigger to actuate the same to permit said retractile springto ca'use movement oi said bell-cranklever with relation to said triggerand a retarding device connected to the said lever.

In testimony that I claim the foregoing as my own I have hereto allixedmy signature in the presence of two subscribing witnesses.

ERIK W ALDEM Alt .l )I l ANSON. Witnesses:

AXEL 'li-romxn, Cnanmas WAnN.

